Not to worry, soon villager's will be removed in town, because Justin also noticed this.

I am only going to remove the ability for them to spawn in Town in "farms", you can still spawn them via eggs, etc. The problem is that people are creating these huge farms that produce thousands of villagers.

im sorry!!! that happened to me on accident once i had to have mods help me eggify them because my mc kept crashing luckily they didnt have to reset my res now ive been done with breeding them in fear of something like that happenening again.. (fyi i had 1080 total villagers on my res that was a little crazy if you think about it)